Safety-razor.



H. H. BOYGB. i

SAFETY RAZOR. A

APPLICATION FILED JULY 17, 1907. RENBWED FEB. 16,1909.

937,532. Patented Apr. 6, 1909.

nutren ernennen encreur ernten HARRISON n. Boron, orNEw Yoan' N. Y., A,,es ijeisupnl 'ro 'GILLETTE SAFETY Razor.'y QQMPLANY, or-ieosrou. MiissAcHUSET'rs, A oonroRA'rIoN or MAINE.

sanary-nazca. i

Safety-Razors, oi which the following is a full, clear, and exact specification.

n This invention relates generally to safety razors and particularly to razors of theat, thin blade type. As usually constructed razors of this type comprise four princi al parts: viz., a cap, a guard, a handle, an a rotary member independent oi the handle 'n ier securing the guard and cap together -so as to clamp the lthin fiat blade between them.

The princi )al o l ject of the present invention is to ecrease the number of the prin` cipal parts to three and to cause" the three parte to accomplish the same results as the fou-r arts above enumerated.

'With the foregoing and other objects in view, whichwill appear as the description proceeds, the invention resides in a razor construction wherein the handle, instead ci serving the sole function of a handle in the usual manner, is caused to'serve the two-fold function oi a handle and a rotary locking member for drawing the guard and cap to- 'at right angles to gether wherebythe necessityot em lo Ting an additional or independent rotaryoc 'ng member is avoided, and the razor construction is thus simplied and rendered less er:- pensive in construction.

The-invention also resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, 'it Y being kundrnstood that .changes in the preciso embodiment of invention herein disclosedcan be made within the scope of the claims without departing from the spirit of the invention. ln the' accompanying drawing forming part of this specification, Figure l is a slde elevation of a safety razor constructed in accordance with the invention. llig. 2 is an end elevation, or, in other words, is a view 1. Fig. 3 is a plan view of the guard. ig. 4 is an under plan view .oi the cap. Fig. 5 is an enlarged detail view, in vertical section, through the u per end of therazor. Fig. .6 is an enlar e de tail view, in side elevationhowng as i htly modied construction. fg. 'T' isa vetail Specication of .Letters Patent.

Applicationed July l?, 1907, Seriall'o. 3d,l3.

Patented apmi e, ieee.y Renewed February 16, 1909. Serial No. 478,333.

view of the modified form of in Fig, 6. yLike reference numerals indicate corres vending parts in the did'erent gures of the awing. The reference numeral l in Figs. 3 and 5 guard shown 2. At the ends thereof the guard l is suitably cut away to form rectangular recesses 3. The ,upper surface oi the guard i prei erably is oi convex form so as to den or bend the thin, lat lblade i in the usualv manner.

The reference numeral 5 indicates the cap, the lower v`or under surface oi which preterably .is concave in form to coperate in the usual manner with the convex upper face of the guard l in flexing the ranorflelade. rllhe manner that it will serve the two-ibid nur# nose. of a -handle and a rotary locking mein ber. in carrying out this idea, the guard i is formed with a central rabbeted opening 8, in which is rigidly taste/ned, in any suitable manner, a hardl metal ring il, which preferably is secured in place in the opening S by upsetting or expanding `its upper end, as shown in Fig. 5. lllxeliard metal ring 9 is stationarv with respect to the guard 1 being held in place by its upset end 8, and by its outer periphery which passes under the guard l and forms an external shoulder and serves as a washer for taking up wear. 'The handle l() extends at its upper end through the washer 9 and is expandedor .enlarged as indicated at il so as' to provide a swivel joint between the washer 9 and saidhandle. Below the washer 9 the handle l0 preferably is bulged outward, as shown at vi2 in Fig. 5

a pairqot annular s oulders in the handle" .indicates the guard, which preferably is -formed along its opposite edges with teeth cap 5 at the ends thereof is termed with n formed by the expanded part 11, and the upper surface of bulged portion 12, the said construction permitting a free relative rotation of the parts While preventing a relative longitudlnal movement. -The handle 10 is internall threaded, as indicated at 13, and is adapte to engage the external threads of a stud 14, which is. rigidly conhected in any suitable manner with the ca 5. The stud 14 preferably is hollow, as s own, and is riveted on to the cap 5 as indicated at v15, although it may be otherwise connected therewlth if desired. It will be apparent that by rotating the handle 1() in one direction or the other, the cap 5 Willbe moved toward or from the guard 1.

In the modiiied construction illustrated in Figs. 6 and 7, the convex guard 1 is dispensed with and a fiat guard 1a is employed. This iiat guard 1a preferably is formed of spring metal, such, for example, as brass, and is formed along its. side edges with grooves 1b, the purpose of which is to weaken the flexible guard l and thus facilitate its bending on lines parallel with the guard teeth, so that Whenl the cap 5a is screwed down on to the guard 1*?, the outer edges of said guard 1 will bend, and thus give the proper angle to the cutting edges of the flexible blade, as will be apparent. A

The` improved razor of this invention is strong, simple, durable, and inexpensive in construction, as Well as thoroughl efficient in operation. By swiveling the andle on to the guard, said handle, as before explained, is caused to serve the two-fold function of a handle and a rotary locking member, and in this Wa the independent rotary locking member W 'ch is usually employed can' be dispensed with, and the princlpal v erases parts of the razor are reduced from four;,`to three.

,What is claimed is:

l. A safety razor comprisin -a cap, a' threaded shank thereon, a guar having an annular, shouldered recess, a ianged vvas'her mounted 1n sald recess and provided with an external shoulder adapted to pass under the 3. A safety razor comprisin a cap, a I

threaded shank thereon, a guarr` having an annular, shouldered recess, an internally threaded handle having a ring sWiveled v-to itat its upper end, and a ange on said ring 'l engaging said shoulder. v y

.4. Av safety razor comprising a cap, a threaded shank thereon, a guard, al handle having a threaded opening, a swivel connection -between said guard and handle comrising a langeon one and a pair of shoulers on the other, and means lfor pr'ev'entin relative, lateral movement ofv the cap an 'guard compnising a projection on oneadapted to enter a recess in the other.

In.. testimony whereof, I have hereunto set my hand in the presence of two subscribing Witnesses. v HARRISON H.,BOYCE.`

Witnesses: y

HERMAN J. SCHWARTZ, CHARLES A. SCHEIUBER. 

